main.c

#include <sys/types.h>
#include <xv6/param.h>
#include "defs.h"
#include "memlayout.h"
#include "mmu.h"
#include "proc.h"
#include "gaia.h"

static void mpmain(void);
extern pde_t *kpgdir;

extern char end[];

// Bootstrap processor starts running C code here.
// Allocate a real stack and switch to it, first
// doing some setup required for memory allocator to work.
int
main(void)
{
  kinit1(end, P2V(1024*1024)); // phys page allocator
  kvmalloc();      // kernel page table
  mpinit();       // collect info about this machine
  cprintf("\ncpu%d: starting xv6\n\n", cpu->id);

  consoleinit();   // I/O devices & their interrupts
  deviceinit();
  uartinit();      // serial port

  pinit();         // process table
  trapinit();        // trap vectors
  binit();         // buffer cache
  fileinit();      // file table
  iinit();         // inode cache
  ideinit();       // disk
  if(!ismp)
    timerinit();   // uniprocessor timer

  kinit2(P2V(1024*1024), P2V(PHYSTOP)); // must come after startothers()
  userinit();      // first user process
  // Finish setting up this processor in mpmain.
  mpmain();
}


// Common CPU setup code.
static void
mpmain(void)
{
  cprintf("cpu%d: starting\n", cpu->id);
  cpu->started = 1;
  scheduler();     // start running processes
}